急问：怎样抓图制成图片

Question

public Form1()
        {
            InitializeComponent();
            pictureBox1.Paint += new PaintEventHandler(pictureBox1_Click);
        }        void pictureBox1_Click(object sender, PaintEventArgs e)
        {
            Graphics g = e.Graphics;
            Pen p = new Pen(Color.Black, 1);
            g.DrawEllipse(p, 9, 11, 70, 72);
            g.DrawLine(p, 45, 20, 45, 40);
      
        }     这段VS08的代码里，怎样把直线抓图来制成图片，再旋转？
         
             谢谢各位大虾！！

Answer 1

旋转的直线效果吗？          void Picture1_Paint(object sender, PaintEventArgs e)
         {
            Graphics gg = e.Graphics;
           
           gg.TranslateTransform(center.X, center.Y);//重定义坐标原点，center.X，center.Y，旋转原点自己定            gg.RotateTransform(angle);//旋转坐标轴            Pen SecPen = new Pen(Color.Black, 2);          gg.DrawLine(SecPen, 0, 0, 0, 100);//画直线
           }在picturebox范围里面画直线，angle是角度，用计时器控制它，就能让直线转起来         /// <summary>
        /// 旋转计时器
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void timerrotate_Tick(object sender, EventArgs e)
        {
            angle+=10f；            pictureBox1.Invalidate();
        }

Answer 2

        public void Save()
        {
            if (SaveDig.ShowDialog() == DialogResult.OK)
            {
                Image Img = new Bitmap(Rect.Width, Rect.Height);
                Graphics g = Graphics.FromImage(Img);
                g.DrawLine(参数);
                Img.Save(SaveDig.FileName);
            }
        }
rect是你图形的区域，就这样，区域可以从各个点来判断